53213112261 has 24 divisors (see below), whose sum is σ = 80921087520. Its totient is φ = 33603188256.

The previous prime is 53213112257. The next prime is 53213112287. The reversal of 53213112261 is 16221131235.

53213112261 is a `hidden beast` number, since 5 + 321 + 311 + 2 + 26 + 1 = 666.

It is not a de Polignac number, because 53213112261 - 2² = 53213112257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53213112761) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1336930 + ... + 1376156.

It is an arithmetic number, because the mean of its divisors is an integer number (3371711980).

Almost surely, 2^53213112261 is an apocalyptic number.

It is an amenable number.

53213112261 is a deficient number, since it is larger than the sum of its proper divisors (27707975259).

53213112261 is a wasteful number, since it uses less digits than its factorization.

53213112261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47185 (or 47182 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

Adding to 53213112261 its reverse (16221131235), we get a palindrome (69434243496).

The spelling of 53213112261 in words is "fifty-three billion, two hundred thirteen million, one hundred twelve thousand, two hundred sixty-one".